Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 7 13:45
1958 0 4:00
1977 88 29:30
1978 80 27:30
1982 0 3:00
1986 53 50:00
1987 5 56:35
2001 0 0:00
2002 0 0:00
2003 2 12:30
2004 348 44:15
2005 288 1018:50
2006 175 647:30
2007 367 816:41
2008 1094 648:15
2009 781 446:08
2010 234 645:00
2011 1765 681:30
2012 155 422:55
2013 152 613:10
2014 231 473:05
2015 216 560:45
2016 93 427:55
2017 2228 576:05
2018 265 430:45
2019 57 455:27
2020 533 423:22
 
Partners